How/Where to Submit Applications There are several ways to submit your completed application. You can: Apply on-line at www.co.sanmateo.ca.us. On-line applications must be received prior to midnight of the final filing date. Submit completed application(s) in person or by mail to: Human Resources Department 455 County Center, 1st Floor Redwood City, CA 94063 (Map and directions) Applications submitted in person must be in our office by 7:00 p.m. on the final filing date. Mailed applications must be postmarked prior to midnight of the final filing date. Note: Applications received after the final filing date cannot be accepted.